The average age of 10 students and their class teacher is 17 years If the age of the class teacher i...........

Quantitative Aptitude (CPO) Average

The average age of 10 students and their class teacher is 17 years. If the age of the class teacher is excluded, the average age

of the 10 students is reduced by 2 years.

What is the age of the class teacher?

This questions was previously asked in

SSC CPO 11th Nov 2022 Shift 2

38 years

36 years

37 years

35 years

- The average age of the teacher and 10 students is 17 years.

- This means the total combined age of 11 people is 17 × 11 = 187 years.

- When excluding the teacher, the average age of the 10 students is reduced by 2 years, making it 15.

- Therefore, the total age of the 10 students becomes 15 × 10 = 150 years.

- The age of the class teacher is the difference: 187 - 150 = 37 years.

- Option 1: 38 years - This option is not correct.

- Option 2: 36 years - This option is not correct.

- Option 3: 37 years - This is the correct answer!

- Option 4: 35 years - This option is not correct.

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